I missed some of the Daily Challenges, and I hope to complete them using the travel ticket.
I am thinking about how I use travel ticket them optimally.
The disclaimer mentioned, "Tickets make up any invalid or late submission for the current year."
I was wondering what the current year refers to. If it means 2021, then consider the case when I miss some challenges in December. In this case, I can never complete them, which is not reasonable.

Thanks for your feedbacks in advance!